Damper positioning means

Claim 1

A DAMPER REGULATOR FOR USE WITH A GAS-CARRYING DUCT HAVING A DAMPER MEANS PIVOTALLY CARRIED BY A DAMPER ROD, SAID DAMPER REGULATOR COMPRISING: A BODY MEMBER ADAPTED TO BE HELD TO THE GAS-CARRYING DUCT AND HAVING A WALL WITH AN OPENING THROUGH WHICH THE DAMPER ROD MAY EXTEND AND FREELY ROTATE, SAID WALL HAVING A FORWARD FACE FACING AWAY FROM THE GAS-CARRYING DUCT WHEN SAID BODY MEMBER IS HELD THERETO AND SAID WALL BEING PROVIDED WITH A SERIES OF CIRCUMFERENTIALLY ARRANGED LOCKING DETENTS PLACED OUTWARDLY OF THE OPENING; AND AN ELONGATED SPRING STEEL LOCKING MEMBER INCLUDING A HANDLE PORTION, MEANS FOR HOLDING SAID LOCKING MEMBER IN TIGHT SLIDING ENGAGEMENT WITH THE FORWARD FACE OF THE WALL OF THE BODY MEMBER, SAID LOCKING MEMBER HAVING A DAMPER ROD RECEIVING HOLE ALONG ITS LENGTH ADAPTED TO ENGAGE THE DAMPER ROD AND A REARWARDLY-TURNED LOCKING TAB FOR COOPERATING WITH VARIOUS ONES OF THE LOCKING DETENTS TO POSITION SAID LOCKING MEMBER WITH RESPECT TO THE BODY MEMBER, SAID LOCKING MEMBER BEING PROVIDED WITH A FORWARDLY PROJECTING TAB IMMEDIATELY ADJOINING THE DAMPER ROD RECEIVING HOLE WITH THE FORWARDLY PROJECTING TAB BEING ON THE SIDE OF THE HOLE CLOSEST TO SAID LOCKING TAB AND SET AT A SLIGHT ANGLE TO THE AXIS OF THE ROD RECEIVING HOLE AND INCLINED AWAY FROM THE LOCKING TAB, SAID LOCKING MEMBER BEING REPOSITIONED BY FORWARD PULLING OF THE HANDLE PORTION THEREOF TO DISENGAGE THE TAB FROM A LOCKING DETENT, FOLLOWED BY TURNING OF THE LOCKING MEMBER TO A DESIRED NEW POSITION AND RELEASE OF THE HANDLE TO PERMIT RETURN OF THE TAB INTO ENGAGEMENT WITH ANOTHER ONE OF THE LOCKING DETENTS AT SAID POSITION.